Controlling mechanism



Oct. 18, 1932. l 1. M. BENJAMIN CONTROL-LNG MECHANISM Original FiledAug. l, 1923 Patented Oct. 18, 1932l iJNirav` STATES PATENT vOFFICE JOHNM. BENJAMIN, OF iaEvERnY,` MASSACHUSETTS, AssIGNOR To UNITED ,SHOEMACHINERY CORPORATION, or rATERsoN, NEW. JERSEY, A CORPORATION or NEWJERSEY Original application :tiled August 1, 1923, Serial No. 655,097.Divided andthisapplication filed December 2 1,V`

CONTROLLING MECHANISM 1929. serial No. 415,862.

My invention relates to controlling mechanism, it being especiallyapplicable to the driving mechanisms of various machines, for examplethose for attaching heels to shoes.

5 The present case is a division of the application tiled in the UnitedStates Patent Oftice in my name on August 1, 1923, it bearing the SerialNo. 655,097, and which on April 14, 1931 became Patent No. 1,800,205.

E liVith certain forms of driving or powertransmitting means in which isincluded such a ciutch as that disclosed in Letters Patent of the UnitedStates No. 1,447,261, Mayo, March 6, 1923, actuation of the treadle orother starting member of the machine so displaces the co-operatingclutcli-parts that, unless the driving force is at the time available,they must be repositioned before the machine can be started. An objectof this invention is to guard against disturbance of the normal relationof the power-transmitting elements unless the driving force is ready forapplication. This object I attain by combining with driving means, whichmay include in the effective for the operation of the associatedmachine, a member, as a treadle, movable by Jthe operator yto controlthe operation of the 30 machine while the driving means continues inoperation, and means for locking the controlling member against movementwhen the driving means is ineffective. In the disclosed embodiment ofthe invention, the driving 0"' means includes a member, which may be adriving belt, movable to determine its activity or inactivity, it beingshown as carried by a shifter between fast and loose pulleys, 1 the fastpulley operating the clutch. The 9' clutch is controlled by the treadle,and this treadle is locked against movement through,A connections to thebelt-shifter when the belt l cha-in of driving connections a clutch, ameans rendering said driving means eifective or inthelocking connectionsand thel machine may be put into action. Y

The accompanying drawing shows in front eleva-tion the lower portion `ofa heel-attaching machine to which one form of, my invention is applied.Y L

The heel-attaching `machine in 4connection with which I have chosentoillustrate this invention" may be as in the Mayo patent previouslymentioned. There is mounted upon a frame 10 a die-block` 12, with`openings of rocatory cross-head leand acting when raised to insert `theattaching nails through a heel into thefheelg-seat of a shoe to whichitis Ato be. secured. Vertical movement is imparted to the drivers, toforce them vagainst the attaching nails for their insertion in the work,by `connecting elements including clutch mechanism 18 associated with adriving shaft 20, which carries a fast pulley 22 and a loose pulley 24connected by a belt 26 to a source of power. Atread'le 28, pivoted atthe bottom of. the frame, is joined to the clutch mechainism, adepression of the treadle causing its engagement for a. single cycle ofoperation of themachine. i

I Certain clutch mechanisms, as that disclosed by kMayo, vare soorganized that, if the member which controls them, as the treadle 28,isactuated when the machine is not in operation, the clutch is releasedvand* assumes an' abnormal position, in rwhich the apparatus Cannot bestarted until it has been brought back to normal by somesuch actasturning ity over with a bar.' To avoid this diiiiculty, I associate withy,the driving mechanismV means forlocking the treadleat all times otherthan when the clutch can be engaged properly. The *.treadle is heldnormally raised to release the clutch by a spring extending between saidtreadle and the frame. Projectingirom one side of the treadle is an arm32 horizontallyfalined with` a recess in the side of a 'lever 34ulcru'med upon the frame and which co-operate drivers 14 carried by arecip-f- 'f having an opening through which passes a rod 86 foractuating a belt-engaging member 37 to shift the driving belt 26 uponthe pulleys 22 and 24 between active and inactive positions. Fixed uponthis rod, at opposite sides of the-lever 34, are contact members 38 and40. Then the belt is upon the loose pulley 24 and the machine is out ofoperation', the Contact member 38 bears against the lever and holds thelower end of the latter so the recess receives the arm 32, locking thetreadle against depression. lVhen the rod is moved to the right to bringthe belt to the fast pulley 22, the member 4:0 contacts with the lever,carrying the recess Vclear of the arm 32, so that, the machine now beingin condition JOHN M. BENJAMIN.

for operation, the treadle is reedifor depresi Sien- AS e result 0f,these. @,Qnnectlonaccidental displacement of the treadle or the Ytampering with'it bv unauthorized persons' Having described invention,what I cannot cause the throwing of the` clutch clai-mvas new and desireto secure by Letters Patent of the Unit-ed States is 1. The combinationwith a machine to be driven, of driving means therefor, means forrendering said driving means effective or ineiiective for the operationof the machine, a member-movable by the operator to control f.- theoperation of the machine whileI the drivingV means continues inoperation, and means for locking the controlling member against movementwhen the driving means is ineffective! 2. The combination with a machineto be driven,L of a driving member movable between active and inactivepositions, a member movab'le by the operator to producea singleoperating Vcycle of the. machine, and means for. locking the lastmentioned member against movement when the driving member isL ininactive position.

3. The combination with a machine to be A driven, of a driving member,means for shifting the driving'member between active.

and inactive positions, a member movable by the operatorv to produce asingle operating cycle of the machine, and means governed by theshifting means for locking th'e'last mentioned member. Y

4. rlhe combination withl a machine to be driven, of fast and loosepulleys, a'driving belt elo-,operating with said pulleys, a beltshifter,clutch mechanism operable from the fast pulley and through which themachine is driven, a treadle for controlling the clutch mechanism, andconnections betweenk the beltshifter and-treadlearranged to govern oneof the elements furnished by said belt-shifter and`` treadle. V

5. The, combination with a machine. to be driven, of fast `and loosepulleys,a driving belt co-operating with said pulleys, a belt-`

